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A method is proposed to compute the response of highly heterogeneous structures by constructing homogenized models when no scale separation can be assumed. The technique is based on an extended homogenization scheme where the averaging operators are replaced by linear filters to cut off fine scale fluctuations, while maintaining locally varying mechanical fields with larger wavelength. As a result,...
This paper presents a finite element formulation to analyze the vibro-acoustic response of plates with constrained-layer damping treatment. This formulation takes into account the effects of fluid loading. The governing coupled structural/acoustic equations of motion are solved using a modal approach combined with an interpolation technique of the reduced radiation impedance matrix components of the...
Predicting the vibro-acoustic behaviour of a structure is usually done by using the well established finite element (FE) method and boundary element method. This paper presents a vibro-acoustic prediction case performed on a metal box using less accurate but simplified methods: sub-structuring for the calculation of the dynamic response of the structure, and a monopole distribution for the radiated...
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